Hi! I’m wondering how I can analyze the regularity of this type of image.
This is an example of the result of an experiment. I’d like to describe numerically the homogeneity/heterogeneity of this image. An increase of bright and dark areas, white spikes at the margins and low homogeneity of the grey color in this case, mean low quality of the result.
Is there an index that describe such a features?
What procedure/plugin/analysis would you suggest me to quantify the degree of heterogeneity of this image? May somebody help me?
I read about kurtosis but I’m not sure that is the right choice.
Thank you for your help!

As a possible global measure of homogeneity you could try the decline of the raw Fourier power spectrum of the image as a function of the radial spatial frequency, i.e. integrated over concentric circles. The latter can be achieved by using the ImageJ-plugin “Radial Profile”.

A related approach would start with the auto-correlation function of the image instead of the Fourier power spectrum.

Good idea. May be enough for this purpose. I’ll give it a try with some images clearly different each other.
I want to understand also the Radial profile procedure. It sounds interesting.
I’ll let you know if it works.
Thanks a lot